>>9840891 Yes superb meme
Colourblindness is not a common condition.
https://www.color-blindness.com/2006/04/28/colorblind-population/
Red-green colorblindness is the most common kind.
Roughly 8% of men and 0.5% of women are affected. Therefore chances that your neighbour or one of your classmates is colorblind are very high.
Deutanomaly is by far the most common color vision deficiency regarding red-green color blindness. The other three types are occurring at nearly the same ratio and do affect about one out of 100 persons each.
Men are approximately 100 times more often affected than women. This shows very nicely that red-green color blindness is a sex-linked trait as described in more detail at The Biology behind Red-Green Color Blindness.
Tritanopia (blue-yellow color blindness) is rare. Some sources estimate that 0.008% are affected by this type of color vision deficiency.
Monochromacy (complete color blindness) is very rare. Different sources vary between 1 in 33’000 to 100’000 (0.001%).
Families are not a good source of numbers concerning color blindness, because vision deficiencies are inherited and therefore some families are affected much more than others.